Laravel 8 Create Unique Slug

Hello Dev.

In this example, I will lean you how to create unique slug in laravel. you can easy and simply create unique slug in laravel.

In this tutorial, I will give you an example of How to Generate Unique Slug in Laravel, So you can easily apply it with your laravel 5, laravel 6, laravel 7, and laravel 8 application.

Let's see step by step to create unique slug in laravel example:

app/Models/Post.php

<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;
class Post extends Model
{
    use HasFactory;
    protected $fillable = [
        'title','slug'
    ];
    /**
     * Boot the model.
     */
    protected static function boot()
    {
        parent::boot();
        static::created(function ($post) {
            $post->slug = $post->createSlug($post->title);
            $post->save();
        });
    }
    /** 
     * Write code on Method
     *
     * @return response()
     */
    private function createSlug($title){
        if (static::whereSlug($slug = Str::slug($title))->exists()) {
            $max = static::whereTitle($title)->latest('id')->skip(1)->value('slug');
            if (is_numeric($max[-1])) {
                return preg_replace_callback('/(\d+)$/', function ($mathces) {
                    return $mathces[1] + 1;
                }, $max);
            }
            return "{$slug}-2";
        }
        return $slug;
    }
}

Controller Code:

<?php
  
namespace App\Http\Controllers;
  
use App\Models\Post;
use Illuminate\Http\Request;
  
class PostController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $post = Post::create([
            "title" => "Laravel Livewire CRUD"
        ]);
        dd($post);
    }
}

now if you create multiple time same title record then it will create slug as bellow:

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